The Librato Metrics Java SDK by Librato and author Collin Van Dyck allows API interaction. It offers Maven dependency to access metrics features. It includes resources to set up the HTTP poster and use LibratoBatch.
This part of the API Testing Series looks at API Metrics, an API monitoring tool. API Metrics has two main functions: API monitoring, for taking the pulse of your API product and user experience; and SLA measurement to monitor the performance of third-party APIs that integrate with your product.